Subtract 81/63 from 42/35
1st number: 1 7/35, 2nd number: 1 18/63
42/35 - 81/63 is -3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
42/35 = 42 × 9/35 × 9 = 378/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
81/63 = 81 × 5/63 × 5 = 405/315 - Subtract the two like fractions:
378/315 - 405/315 = 378 - 405/315 = -27/315 - After reducing the fraction, the answer is -3/35
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